include/asm-powerpc/topology.h

   1 #ifndef _ASM_POWERPC_TOPOLOGY_H
   2 #define _ASM_POWERPC_TOPOLOGY_H
   3 #ifdef __KERNEL__
   4
   5
   6 struct sys_device;
   7 struct device_node;
   8
   9 #ifdef CONFIG_NUMA
  10
  11 #include <asm/mmzone.h>
  12
  13 static inline int cpu_to_node(int cpu)
  14 {
  15         return numa_cpu_lookup_table[cpu];
  16 }
  17
  18 #define parent_node(node)       (node)
  19
  20 static inline cpumask_t node_to_cpumask(int node)
  21 {
  22         return numa_cpumask_lookup_table[node];
  23 }
  24
  25 static inline int node_to_first_cpu(int node)
  26 {
  27         cpumask_t tmp;
  28         tmp = node_to_cpumask(node);
  29         return first_cpu(tmp);
  30 }
  31
  32 int of_node_to_nid(struct device_node *device);
  33
  34 struct pci_bus;
  35 extern int pcibus_to_node(struct pci_bus *bus);
  36
  37 #define pcibus_to_cpumask(bus)  (pcibus_to_node(bus) == -1 ? \
  38                                         CPU_MASK_ALL : \
  39                                         node_to_cpumask(pcibus_to_node(bus)) \
  40                                 )
  41
  42 /* sched_domains SD_NODE_INIT for PPC64 machines */
  43 #define SD_NODE_INIT (struct sched_domain) {            \
  44         .span                   = CPU_MASK_NONE,        \
  45         .parent                 = NULL,                 \
  46         .groups                 = NULL,                 \
  47         .min_interval           = 8,                    \
  48         .max_interval           = 32,                   \
  49         .busy_factor            = 32,                   \
  50         .imbalance_pct          = 125,                  \
  51         .cache_nice_tries       = 1,                    \
  52         .per_cpu_gain           = 100,                  \
  53         .busy_idx               = 3,                    \
  54         .idle_idx               = 1,                    \
  55         .newidle_idx            = 2,                    \
  56         .wake_idx               = 1,                    \
  57         .flags                  = SD_LOAD_BALANCE       \
  58                                 | SD_BALANCE_EXEC       \
  59                                 | SD_BALANCE_NEWIDLE    \
  60                                 | SD_WAKE_IDLE          \
  61                                 | SD_WAKE_BALANCE,      \
  62         .last_balance           = jiffies,              \
  63         .balance_interval       = 1,                    \
  64         .nr_balance_failed      = 0,                    \
  65 }
  66
  67 extern void __init dump_numa_cpu_topology(void);
  68
  69 extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
  70 extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
  71
  72 #else
  73
  74 static inline int of_node_to_nid(struct device_node *device)
  75 {
  76         return 0;
  77 }
  78
  79 static inline void dump_numa_cpu_topology(void) {}
  80
  81 static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
  82 {
  83         return 0;
  84 }
  85
  86 static inline void sysfs_remove_device_from_node(struct sys_device *dev,
  87                                                 int nid)
  88 {
  89 }
  90
  91
  92 #include <asm-generic/topology.h>
  93
  94 #endif /* CONFIG_NUMA */
  95
  96 #ifdef CONFIG_SMP
  97 #include <asm/cputable.h>
  98 #define smt_capable()           (cpu_has_feature(CPU_FTR_SMT))
  99 #endif
 100
 101 #endif /* __KERNEL__ */
 102 #endif  /* _ASM_POWERPC_TOPOLOGY_H */